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7
INTRODUCTION
Routine and Periodical Mainte-
nance
The GY-HD100 incorporates precision mechanical parts,
which will collect dirt, wear out and deteriorate as the unit is
used. After the unit has been used for a long period even in a
normal environment, the heads, drums and tape transport
mechanisms also collect dirt. Especially, dust which pene-
trates the inside of the VTR section during outdoor use will
promote the wear and deterioration of mechanical parts by
causing poor contact between tape and heads or failing to
maintain the video and audio quality at high levels. To prevent
wear and deterioration, clean the mechanical parts using a
head cleaning tape as routine maintenance. However, clean-
ing with a head cleaning tape alone is not enough for cleaning
the entire tape transport mechanism, so it is also recom-
mended to apply periodical maintenance (inspection) to pre-
vent the sudden occurrence of failure. As the replacement,
adjustment and servicing of parts require advanced skill and
equipment, please consult the person in charge of profes-
sional video equipment at your nearest JVC-authorized ser-
vice agent.
Head Cleaning
• To maintain beautiful pictures and sound, be sure to use a
head cleaning tape to clean the head periodically.
(X See “Precautions for Use of Head Cleaning Tape”.) If
headcleaning is not performed periodically, a type of
mosaic noise called block noise may appear in the picture
or sound may be interrupted.
• Please use cleaning tape produced by JVC. Do not use
head cleaning tapes other than specified.
X See “Precautions for Use of Head Cleaning Tape”
about how to use the head cleaning tape and precautions
for use of the head cleaning tape.
• When dust adheres to the heads, the warning message
“HEAD CLEANING REQUIRED!” is displayed on the LC
monitor and in the viewfinder during playback, edit search,
and recording check using the RET button on the lens sec-
tion.
Periodical Maintenance
Contents :Check or replace the following mechanical parts
according to the running time.
G: Clean, check and adjust.
E: Clean and check. Replace as required.
F: Replace.
• The maintenance contents vary depending on the operat-
ing environment and method. Therefore, the above data
should be considered as a reference.
Time management
The accumulated running time of the unit can be confirmed
with the hour meter display (which shows the accumulated
drum and fan motor running time). X See “How to Display
the Hour Meter” on page 89.
Precautions for Use of Head
Cleaning Tape
Please use cleaning tape produced by JVC.
Adhere to the following precautions when using the head
cleaning tape.
1. Insert the cleaning tape.
Press the PLAY/STILL button after the cleaning tape is
fully loaded.
The tape runs for 10 seconds at a time in the PLAY mode.
(The tape stops automatically and then the unit enters the
STOP mode.)
2. Do not use the tape more than four times at the most for
each cleaning.
Use the following chart as a guide for periodical head
cleaning.
Note 1) When used in a low humidity environment, head
cleaning should be conducted at intervals half of
those given in the below chart.
Note 2) If an M-DV80 tape is used immediately after head
cleaning, the “HEAD CLEANING REQUIRED!”
indicator may remain on. In this case, let the tape
run as the indicator will turn off after the tape has
run for a while.
Note 3) Use the cleaning tape in the room temperature
(10°C to 35°C).
Note 4) The cleaning tape case contains instructions for
use of the cleaning tape. However, some of these
instructions differ from the contents of this sheet.
When using the cleaning tape, please follow the
instructions of this sheet.
Note 5) If the “HEAD CLEANING REQUIRED!” does not
disappear after repeated head cleanings, the
recording tape may be abnormal. Avoid excessive
repeated use of the head cleaning tape.
Usage Time 500H 1000H 1500H 2000H
Drum assembly (includ-
ing heads)
GEEF
Tape guides, rollers GEEF
Belt gears HEEF
Drive parts HHE F
Block Noise
For consultations related to the maintenance planning or
cost, please contact the person in charge of professional
video equipment at your nearest JVC-authorized service
agent.
Running
Low
temperature
Room
temperature
High
temperature
Operating envi-
ronment
0°C to 10°C 10°C to 35°C 35°C to 40°C
Yardstick for
use of cleaning
tape
1 to 2 times ev-
ery 5 hours
1 to 2 times ev-
ery 20 to 30
hours
1 to 2 times ev-
ery 5 hours
e_hd100.book Page 7 Thursday, July 14, 2005 5:28 PM